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Simpson Lake, AZ Weather Forecast
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Simpson Lake Weather Forecast
| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
 |  | |  |  |  | | | | | | |
| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Sunny | Clear | Sunny | Clear | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Mostly Clear |
| Hi: 76°FHi: 24°C | Lo: 59°FLo: 15°C | Hi: 73°FHi: 23°C | Lo: 53°FLo: 12°C | Hi: 72°FHi: 22°C | Lo: 50°FLo: 10°C | Hi: 76°FHi: 24°C | Lo: 57°FLo: 14°C | Hi: 75°FHi: 24°C | Lo: 56°FLo: 13°C | Hi: 72°FHi: 22°C | Lo: 54°FLo: 12°C |
| POP: 70% | POP: 60% | POP: 70% | POP: 10% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1131 AM MST Mon Oct 12 2026 
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Issued: 248 PM MST Mon Oct 12 2026
Key Messages
- Periods of isolated to scattered showers will continue today through Tuesday morning.
- Temperatures will continue to cool through the first half of the week with highs dipping into the seventies, while overnight lows easily reach into the fifties for Tuesday and Wednesday.
- Dry weather will settle in by Wednesday before breezy to windy conditions return later in the week and temperatures slowly return to near normal.
Aviation
...Updated at 1755Z.
South Central Arizona including KPHX, KIWA...